| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Composition–Processing–Microstructure-Property Relationships of Titanium Alloys
|
| Presentation Title |
G-4: Study of Microstructure of Titanium Alloys and Its Relation to Mechanical Properties of Alloys for Aerospace Industry |
| Author(s) |
Borys Petrovich Sereda, Yaroslav Pylypchuk, Dmytro Kruhliak |
| On-Site Speaker (Planned) |
Dmytro Kruhliak |
| Abstract Scope |
Titanium alloys were processed using functionally active charges. The results of the study of heat resistance of protective coatings showed that the thickness of the oxidized layer is 10-20 microns. The best results of heat resistance showed titanium coatings alloyed with nickel. The greatest resistance to high-temperature oxidation is characterized by (α+β)-alloy. It is established that with the increase of processing temperature residual stresses increase (at T= 950º C σ =130 MPa, at T= 1050º C σ =170 MPa). The hardness of the surface layer was 750 NV, and the hardness of the inner layers of the VT-20 alloy was 1.8 GPa. Additional alloying with aluminum leads to the formation of a protective film of Al2O3, which prevents the diffusion activity of oxygen. |